Hydrodeoxygenation is one of the promising technologies for the transformation of triglycerides into long-chain hydrocarbon fuel commonly known as green diesel. The hydrodeoxygenation (HDO) of rubber seed oil into diesel range (C₁₅–C₁₈) hydrocarbon over non-sulphided bimetallic (Ni-Mo/γ-Al₂O₃ solid catalysts were studied. The catalysts were synthesized via wet impregnation method as well as sonochemical method. The synthesized catalysts were subjected to characterization methods including FESEM coupled with EDX, XRD, BET, TEM, XPS, NH₃-TPD, CO-chemisorption and H₂-TPR in order to investigate the effects of ultrasound irradiations on physicochemical properties of the catalyst. All the catalysts were tested for HDO reaction at 350 °C, 35 bar, H₂/oil 1000 N (cm³/cm³) and WHSV = 1 h⁻¹ in fixed bed tubular reactor. The catalyst prepared via sonochemical method showed comparatively higher specific surface area, particles in nano-size and uniform distribution of particle on the external surface of the support, higher crystallinity and lower reduction temperature as well as higher concentration of Mo⁴⁺ deoxygenating metal species. These physicochemical properties improved the catalytic activity compared to conventionally synthesized catalyst for HDO of rubber seed oil. The catalytic performance of sonochemically synthesized Ni-Mo/γ-Al₂O₃ catalyst (80.87%) was higher than the catalyst prepared via wet impregnation method (63.3%). The sonochemically synthesized Ni-Mo/γ-Al₂O₃ catalyst is found to be active, produces 80.87 wt% of diesel range hydrocarbons, and it gives high selectivity for Pentadecane (18.7 wt%), Hexadecane (16.65 wt%), Heptadecane (24.45 wt%) and Octadecane (21.0 wt%). The product distribution revealed that the deoxygenation reaction pathway was preferred. Higher conversion and higher HDO yield in this study are associated mainly with the change in concentration ratio between oxidation states of molybdenum (Mo⁴⁺, Mo⁵⁺, and Mo⁶⁺) on the external surface of the catalyst due to ultrasound irradiation during the synthesis process. Consequently, the application of sonochemically synthesized non-sulphided catalysts favored mainly hydrodeoxygenation of diesel range hydrocarbon.

加氢脱氧是将甘油三酸酯转化为通常被称为绿色柴油的长链烃燃料的有前途的技术之一。橡胶种子油的加氢脱氧（HDO）成柴油范围（C ₁₅ -C ₁₈）烃相对于非硫化的双金属（镍-钼/γ-Al系_2种ö ₃的固体催化剂进行了研究。将催化剂通过湿浸渍法作为合成对合成的催化剂进行了表征，包括FESEM，EDX，XRD，BET，TEM，XPS，NH ₃ -TPD，CO-化学吸附和H ₂表征。-TPR是为了研究超声辐射对催化剂理化性质的影响。在固定床管式反应器中，在350℃，35巴，H ₂ /油1000N（cm ³ / cm ³）和WHSV ＝ 1h ^-1下测试所有催化剂的HDO反应。通过声化学方法制备的催化剂显示出相对较高的比表面积，纳米尺寸的颗粒和颗粒在载体外表面上的均匀分布，较高的结晶度和较低的还原温度以及较高的Mo ⁴⁺浓度。使金属物质脱氧。与用于橡胶籽油的HDO的常规合成催化剂相比，这些物理化学性质改善了催化活性。声化学合成的Ni-Mo系的催化性能/γ-Al系₂ ö ₃催化剂（80.87％）高于通过湿浸渍法（63.3％）制备的催化剂更高。的声化学合成的镍-钼/γ-Al系₂ ö ₃发现该催化剂具有活性，可产生80.87 wt％的柴油范围烃，并且对十五烷（18.7 wt％），十六烷（16.65 wt％），十七烷（24.45 wt％）和十八烷（21.0 wt％）具有很高的选择性。产物分布表明脱氧反应途径是优选的。在这项研究中，较高的转化率和较高的HDO产量主要与催化剂外表面上的超声波辐照期间钼在氧化态（Mo ⁴⁺，Mo ⁵⁺和Mo ⁶⁺）的氧化态之间的浓度比变化有关。合成过程。因此，声化学合成的非硫化催化剂的应用主要有利于柴油范围烃的加氢脱氧。